Auguste desgoffe



(No Model.)

LDESGOFFE. GOVERNOR FOR ENGINES.

No. 544,061. PatentedAug. 6, 1895.

I ITED STATES- PATENT OFFICE.

AUGUSTE DESGOFFE, OF ODESSA, RUSSIA.

GOVERNOR FOR ENGINES.

SPECIFICATION forming part of Letters Patent No. 544,061, dated August6, 1895.

Application filed November 10, 1891- Serial No. 411,525. (No model.)Patented in Belgium January 8, 1890, No. 89,115; in France January 23,1890, No. 203,322, and in Italy May 20,1890,No. 27,538/81. v

and it consists of certain novel parts and combinations of parts, whichwill be specifically pointed out in the claims concluding thisspecification.

The following is a description of the gov ernor shown in theaccompanying drawing;

but it will be understood that my invention is not limited to theprecise devices and combination of devices here illustrated anddescribed, as various modifications in the structure may be made withoutdeparting from the spirit of my invention and without exceeding thescope of the concluding claims.

' The drawing herewith filed illustrates a longitudinal section througha governor containing my present invention.

I will now describe the structure indicated in said drawing, which isone of the forms in which I at present prefer to embody my invention,while in the claims I will indicate the novel features of my inventionand will specify the subject-matter covered by these Letters Patent.

2 is a base or bed-piece on which are set standards 3 3.

d is a shaft attached to any revolving part of an engine or othercontrivance to which the regulator is applied.

5 is a piston keyed to the shaft 4.

6 is a cylindrical case provided with headpieces 7 and 8. The bottomhead-piece 8 is provided with four perforated ears, two of which 9 9 areshown slipping over the standards 3 3 (only two of the four being shown)and free to rise and fall on said standards.

Each of the standards'o is surrounded by a spiral spring 10, which atone end bears upon the top of the ears 9 and at the other end against acollar 11, surrounding the standard 3, held in place by pin 12.

The head-piece 7 is provided with a pin having a screw-thread 13 on anenlarged section, forming a plugin the said head-piece and securingthereto an eye 14.

15 is a set-screw or plug stopping a hole in the cover 7. The cover 7 isprovided with a flange, forming a ledge all around its top, to which acylindrical envelope 16 is attached at one end. At the other end it isattached to a ledge on the bottom head-plate.

The space 17 is formed between the outer walls of the case 6 and theinner walls of the envelope 16. This forms an annular reservoir open tothe air at 18.

The shaft 4 is bored at its upper end to receive the pin 19, providedwith longitudinal groove 23, which, in connection with ears 9 andstandards 3, form a guide for the case 6 as it rises and falls, ashereinafter described.

22 is a stuffing-bag surrounding the shaft 4: to prevent the escape ofthe fluid contained in the cylinder at the point where the shaft entersthe case.

In certain applications for Letters Patent I have illustrated anddescribed what I call the antispire systenyin which opposing surfaces,each provided with threads inclined in opposite directions, form, ingeneral terms, the characteristic feature. To these specificationsreference is here made for a fuller description of the general principles and features of structures operating on this principle. 1

- The piston 5 is provided with spiral threads 20 20, inclined in onedirection, and the case 6 is likewise provided with spiral threads 2121, inclined in the opposite direction, so that where the inclinedsurfaces are face to face these threads cross each other at a givenangle, which angle, generally speaking, I prefer should be seventeendegrees forty minutes. As I have said before, the piston 5 is keyed tothe revolving shaft 4, which is connected to any suitable moving part ofan engine or other device to which it is attached, and, ac cording toprinciples fully explained in my said applications, it is obvious thatif water, oil, or any other suitable fluid have free access ICO to thelower part of the case 6 the revolution of this piston will propel itagainst the upper head 7 of the cylinder 6 with a force proportioual tothe velocity at which the piston revolves.

The operation of the device above described may be thus stated: Thelower part of the cylinder-chamber 6 is filled with water, as is alsothe reservoir 17. This reservoir is open to the air at 18. Hence, therevolution of the piston 5, propelling the water against the cover 7,causes those parts of the structure to which the cover is attached torise against the force of gravity and against the force of the springs10 10. The elevation which it will reach is determined by the pressureof the water against the head, which in turn is determined by the speedat which the piston revolves. The eye 14 is connected, by suitablelevers or other contrivances, with the valve controlling the admissionof steam, gas, water, or whatever may be the substance operating thedevice, so that as the case rises the motive power is more or lessdiminished and as it falls the motive power is more or less increased.In this way perfect regulation of the speed of the device may beobtained.

It will be observed that in this regulator the use of all flexible orelastic parts is avoided, and that a non-elastic medium, such as water,glycerine, &e., is employed, so that every change of speed of the engineoperates the governor, which instantly acts upon the valve controlledthereby. This governor is extremely sensitive and responds instantly tothe slightest variation of speed of the engine controlled thereby.Indeed, its sensiti'veness is practically unlimited, owing to the factthat the oppositely-inclined grooves operate in a positive manneruponthe inelastic fluid under pressure. This regulator may be placedhorizontally or in any inclined position. If inclined, preferably theannular reservoir containing the fluid should be in communication with asupplemental reservoir to supply it with such fluid.

The antispire grooves, their form, number, and dimensions, may varyaccording to the requirements of the device and they may be of anyrequired inclination, although in general I prefer to give them, both onthe piston and on the case, an inclination of seventeen degrees fortyminutes. However, the opposite grooves need not have the sameinclination. As is more fully pointed out in my said pendingapplication, the essential relation between the grooves on the opposingsurfaces is that they must form angles with each other, and it is nottherefore necessary that the grooves of both surfaces have the sameinclination.

In the foregoing specification I have described a few of themodifications which may be employed in the practice of my invention, butI have not endeavored to describe all the modifications which may besuggested, as the object of this specification is to instruct othersskilled in the art to practice my invention in forms which are atpresent preferred, and to understand its nature; and it will thereforebe understood that the mention by me of a few modifications is notintended to exclude others not referred to, but which are within thespirit and scope of my invention.

Certain details, illustrated and herein described, are not essential tothe several features of my invention, broadly considered.

All this will be pointed out in the concluding claims, as the omissionin a given claim of reference to an element, or the omission ofreference to the particular features of the elements contained, willbeunderstood to be a formal declaration of the fact that the omittedelements or features are not essential to the operation of the inventioncovered by said claim.

Having thus described the preferred structure involving my presentinvention, what I claim, and desire to secure by Letters Patent, is-

1. In a regulator, the combination of a plurality of opposing surfaces,each provided with continuous threads, the threads of the opposingsurfaces being inclined so as to cross each other, a reservoircontaining fluid acted upon by said threads, a movable part controlledby said fluid, a motor or equivalent device, by which said piston iscaused to revolve, and suitable connections between said reservoir andadmission valve of said motor, or equivalent device, to control theadmission of the acting fluid.

2. In a regulator, the combination of a plurality of opposingcylindrical surfaces, each provided with continuous threads, the threadson the opposing surfaces being inclined so as to cross each other, oneof said cylinders being free to move longitudinally and the other beingadapted to revolve, a reservoir containing fluid acted upon by saidthreads having a movable part controlled by said fluid, a motor orequivalent device, by which one of the ele ments is caused to revolve,and suitable connections between said movable part and the admissionvalve of said motor, or equivalent device, to control the admission ofthe acting fluid.

3. In a regulator, the combination of an inclined cylindrical surfaceprovided with continuous threads, a piston provided with continuousthreads inclined so as to cross the threads on the case, a motor, orequivalent device by which said piston is caused to revolve, a reservoircontaining fluid acted upon by said threads, said case being adapted tomove longitudinally, suitable connection between said oase and theadmission valve of said motor, or equivalent device, to control theadmission of the acting fluid.

4. In a regulator, the combination of a case provided with continuousthreads, a piston provided with continuous threads, the threads Ice onthe piston and case being inclined so as to cross each other, an annularreservoir surrounding said case, said case being adapted to movelongitudinally, a motor or equivalent device, by which said piston iscaused to revolve and suitable connections between said case and theadmission valve of said motor, or equivalent device, to control theadmission of the acting fluid.

5. In a regulator, the combination of a case providedwith continuousthreads, a piston provided with continuous threads, the threads on thepiston and case being inclined so as to cross each other, said casebeing adapted to move longitudinally, guides for'the case and means fortransmitting the movements of the case to the admission valve of themotor, or analogous structure, to be regulated.

6. In a regulator the combination of a case provided with continuousthreads, a piston provided with coutinuousthreads, the threads on thepiston and case being inclined so asto cross each other, a motor oranalogous structure, to be regulated, a shaft connecting a moving partof the'motor and said piston, said shaft being bored at its upper endand a pin projecting from the upper cover of the case into the bored endof the piston, a reservoir containing fluid acted upon by said threads,

. a movable part controlled by said fluid and suitable connectionsbetween said case and the admission valve of said motor, or analogousstructure, to control the admission of the acting fluid.

7. In a regulator the combination of a case p'rovided'with continuousthreads, :1. piston provided with continuous threads, the threads on thepiston and case being inclined to cross each other said case beingcontrolled by fluid acted upon by said threads adapted to have alongitudinal motion and said piston being adapted to have a rotarymotion, guides for controlling the movements of the case, a spring forresisting the propelling action of the piston against said case, a motoror equivalent device, by which said piston is caused to revolve, andsuitable connections between said case and the admission valve of saidmotor, or equivalent device, to control the admission of the actingfluid.

AUGUSTE DESGOFFE. Witnesses:

O. MEURINE, 01G. WARR.

